at the same time, hamas has been retaliating today. at least 130 rockets fired from gaza into israeli cities. about 50 of those rockets were intercepted by israel's homemade antimissile defense system, the iron dome, but one did get through. it hit the israeli town and killed three israeli citizens, and now israel is using that, of course, to threaten more attacks. the southern commander of the israeli army said that the assassination yesterday of ahmed jabbaarie, which kicked all this off, the militant leader, he says is just the beginning. meanwhile, israeli troops are gathering on the edge of gaza. tanks have been reported moving south. a ground invasion is possible. it's definitely not what israel wants, but israel's defense minister ehud barak said this morning that israel would do anything, and he repeated, anything at all, to stop the rockets to make israel's southern cities safe. martin fletcher, nbc news, tel aviv. >> martin, thanks so much. >>> nbc meteorologist bill karins is here with your weather channel forecast. good mor